1
by Kennedy, Gavin
Published 1989
2
Published 1992
3
by Ury, William
Published 1991
4
by Fisher, Roger
Published 1991
5
by Fisher, Roger
Published 1991
6
by Fisher, Roger
Published 1991
7
by Mills, Harry A.
Published 1991
8
by Coffin, Royce A.
Published 1973
9
by Kennedy, Gavin
Published 1987
10
by Johnson, Ralph A
Published 1993
11
by Pruitt, Dean G.
Published 1993
12
by Churchman, David
Published 1993
13
by Nierenberg, Gerard I.
Published 1968
14
by Godefroy, Christian.
Published 1993